#2D4B87
Closest named color: Cobalt (#1E488F). oklch(42.2% 0.106 262.7), rgb(45, 75, 135).
Aa
White text reads best on this color (8.50:1).
About this color
#2D4B87 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.106 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.023 away. White text reads best on it, at 8.50:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.46:1 |
| White text | 8.50:1 |
Values
| HEX | #2D4B87 |
| RGB | rgb(45, 75, 135) |
| HSL | hsl(220, 50%, 35%) |
| OKLCH | oklch(42.2% 0.106 262.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2D4B87 | 8.50:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #2D4B87 | 2.46:1 | Fails | Lc 14.9 | Not readable |
| #2D4B87 text on white | 8.50:1 | AAA | Lc 89.0 | Fine for body text |
| #2D4B87 text on black | 2.46:1 | Fails | Lc -13.2 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ABC1EA
oklch(80.8% 0.063 262.8)
-
Step 400
400
#7FA0DF
oklch(70.6% 0.1 262.8)
-
Step 500
500
#5F88D6
oklch(63.2% 0.127 262.3)
-
Step 600
600
#4670C3
oklch(55.6% 0.137 262.6)
-
Step 700
700
#385DA9
oklch(49.1% 0.129 263)
-
Step 800
800 (this color)
#2D4B87
oklch(42.2% 0.106 262.7)
-
Step 900
900
#29406D
oklch(37.6% 0.083 262.6)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#2D4B87 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2F5189 | 0.018 |
| Deuteranopia (no green cones) | #214986 | 0.014 |
| Tritanopia (no blue cones) | #005962 | 0.089 |
| Achromatopsia (no color) | #4D4D4D | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4B87
#2D4B87
oklch(42.2% 0.106 262.7)
- #654800
#654800
oklch(42.2% 0.087 82.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2D4B87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.023
- Dusk Blue #26538D ΔE 0.023
- Light Navy #155084 ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.045
- Twilight Blue #0A437A ΔE 0.045
- Blueberry #464196 ΔE 0.049
- Twilight #4E518B ΔE 0.050
Use #2D4B87 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.